Financial Maths
Measurement
Maths Riddle
Random
Me
100

What is 25% of $180,000?

$45,000

100

What is 0.000 007 23 mm expressed in scientific notation?

7.23 x 10-6 mm

100

There are 3 apples in the basket and you take away 2. How many apples do you have now? 

You have 2 apples. You took away 2 apples and left 1 in the basket.

100

7-24÷8*4+6

1
100

How do you spell my last name?

Wiegmann

200

The price of an iPhone is $1257. With a 7% tax, what is the price of the phone? (To the nearest dollar).

$1345

200

An ant is measured in a school science experiment and its length is recorded as 1.2 cm. What is the upper limit of accuracy of this measurement?

 

1.25 cm

200

How many months of the year have 28 days?

All of them.

200

6*4÷12+72÷8-9

2

200

Where do I live?

Mason City

300

Jenny invested $25,000 for 2 years and 5 months. The simple interest is calculated at 6%. What is the total value of the investment at the end of this period?

$28,625

300

Perth in Western Australia is 8 hours ahead of Coordinated Universal Time (UTC). Cape Town in South Africa is 2 hours ahead of UTC. What is the time in Cape Town when it is 1 pm in Perth?

7pm

300

Mrs. Brown has 5 daughters. Each of these daughters has a brother. How many children does Mrs. Brown have?

They have 6 children. Each daughter has the same brother. There are 5 daughters and 1 son.

300

-1*[(3-4*7)÷5]-2*24÷6

-3

300

How many pets do I have? And what are they? (Need both parts for points)

A cat and a turtle

400

A house was purchased in 1990 for $35 000. Assume that the value of the house has increased by 5% per annum since then. What is the value of the house in 2009? (To the nearest dollar). 

$88,443

400

What is the formula for calculating the volume of a rectangular prism?

L x W x H 

400

When Grant was 8, his brother was half his age. Now, Grant is 14. How old is his brother?

10 years old.

400

(3*52÷15)-(5-22)


4

400

What sport am I an assistant coach for?

Soccer 

500

Alex purchased 800 shares. The total cost was $2.60 per share. Alex sold the shares one year later for $3.40 each and paid a fee of $24.95 for selling the shares. What profit did Alex make on these shares?

$615.05

500

What is the radius of a circle with an area of 314 metres square? (rounded to the nearest m)

10m

500

Liam was 11 the day before yesterday, and next year he’ll turn 14. How is this possible?

Today is January 1st, and Liam’s birthday is December 31st. Liam was 11 the day before yesterday (December 30th), then turned 12 the next day. This year on December 31st he’ll turn 13, so next year he’ll turn 14.

500

(14*22+33)-25÷4


23

500

How old am I?

28

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